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Polymorph

by TheIllusiveC4

Solves recipe conflicts in modpacks by letting players choose which result to craft when multiple recipes share the same inputs.

Polymorph logo on a wall of inventory slots, drawn for this Polymorph page
Polymorph with the loaders and versions it runs on, drawn for this Polymorph pagethe game versions Polymorph covers, drawn for this Polymorph pagePolymorph in the Utility list, drawn for this Polymorph page
Category
Utility
Complexity
Beginner-Friendly
Downloads
40M
Sides
ClientServer

Download Polymorph

Polymorph 1.1.0+1.21.1 sits on our own server, the build TheIllusiveC4 released on 2025-07-21, 0.2 MB. TheIllusiveC4 stays the author of Polymorph, the file is only hosted here. 0.2 MB is the whole of Polymorph, one file. 1,502 people follow Polymorph for the next build.

Download polymorph-neoforge-1.1.0_1.21.1.jar

For neoforge on Minecraft 1.21 and 1.21.1. SHA1 84f8c539fa326dc723ae62b7a6916d6b01982d07 is the checksum of this Polymorph file. 2025-07-21 is the date TheIllusiveC4 put this Polymorph build out. 0.2 MB after download, no unpacking for Polymorph.

TheIllusiveC4's own Polymorph page · Polymorph source code

Overview

Solves recipe conflicts in modpacks by letting players choose which result to craft when multiple recipes share the same inputs. Polymorph lists works with crafting table, furnace, and more among its features. TheIllusiveC4 files Polymorph under Utility. It is built for players who hit recipe conflicts when many mods share the same ingredients. It brings recipe conflict resolution.

When several recipes match your inputs, Polymorph adds a selector so you choose the exact result, and remembers your preference. It counts 5 features across 16 versions. It belongs on both sides. It needs no companion mod. It covers 16 game versions.

Polymorph 1.1.0+1.21.1 is downloadable here, 0.2 MB. It includes supports all modded recipe types. 22 other Utility mods sit beside Polymorph. 1,502 people watch Polymorph for updates. It ships under LGPL.

TheIllusiveC4 tags Polymorph as recipes, conflicts and crafting. It spans 1.15.2 to 1.21.1. It is rated beginner to learn. The Polymorph code is open to read. 16 builds carry the Polymorph name.

1.21.1 is the newest game version TheIllusiveC4 has signed off for Polymorph, and 14 releases have landed since. It counts 5 features across 16 versions. 3 separate builds keep Polymorph running, one per loader. It includes works with crafting table, furnace, and more. It lists persistent output preference among its features.

Mod Loaders

Polymorph ships a separate build for each of Forge, Fabric and NeoForge. It needs one loader, Polymorph ignores the other. 1,502 watchers follow Polymorph today. It lists works with crafting table, furnace, and more among its features.

Minecraft Versions

16 game versions carry Polymorph, 1.15.2 at the oldest and 1.21.1 at the newest. A Polymorph jar built for another version will not load Polymorph. It counts 5 features across 16 versions. The Polymorph file here is version 1.1.0+1.21.1, for Minecraft 1.21 and 1.21.1.

1 jar of Polymorph for 1.15:1.15.2
1 Polymorph build carry 1.16:1.16.5
1 jar of Polymorph for 1.17:1.17.1
Polymorph covers 1.18 in 1 build:1.18.2
Polymorph on 1.19: 5 builds:1.191.19.11.19.21.19.31.19.4
Polymorph on 1.20: 5 builds:1.201.20.11.20.21.20.41.20.6
2 Polymorph builds carry 1.21:1.211.21.1

1.20.6, 1.21 and 1.21.1 are the newest game versions with a Polymorph build. Your launcher version and the Polymorph jar version have to match. Each number exists per loader, so 48 Polymorph combinations in all. 1.15.2 and 1.16.5 are the oldest Polymorph builds, below 1.15.2 there is none.

Release history

TheIllusiveC4 has published 109 Polymorph builds, the first on 2023-02-03 and the newest on 2025-07-21. The date says when Polymorph last moved, not how long it will keep working. It spans 1.15.2 to 1.21.1. Each Polymorph build targets its own game version and loader.

The most recent Polymorph builds published by TheIllusiveC4
BuildPublishedForDownloads
1.1.0+1.21.12025-07-21NeoForge · 1.21, 1.21.11M · 0.2 MB
1.1.0+1.21.12025-07-21Fabric · 1.21, 1.21.1718K · 0.3 MB
1.1.0+1.21.12025-07-21Forge · 1.21, 1.21.114K · 0.2 MB
1.0.10+1.21.12025-04-22NeoForge · 1.21, 1.21.1364K · 0.2 MB
1.0.10+1.21.12025-04-22Fabric · 1.21, 1.21.1255K · 0.3 MB
1.0.10+1.21.12025-04-22Forge · 1.21, 1.21.13K · 0.2 MB
0.49.10+1.20.1beta2025-04-22Forge · 1.20, 1.20.16M · 0.3 MB
0.49.10+1.20.1beta2025-04-22Fabric · 1.20, 1.20.14M · 0.6 MB

2025: 16 builds · 2024: 56 builds · 2023: 37 builds

Key Features

Polymorph brings a focused set of features to the table. Highlights include recipe conflict resolution, plus click to choose desired output, with the full list below.

  • Recipe conflict resolution
  • Click to choose desired output
  • Works with crafting table, furnace, and more
  • Persistent output preference
  • Supports all modded recipe types

Tags

#recipes#conflicts#crafting#modpacks

How to install Polymorph

Polymorph takes one of Forge, Fabric and NeoForge. It lists recipe conflict resolution among its features. It spans 1.15.2 to 1.21.1. It belongs on both sides.

  1. 1Install Forge for the Minecraft version you want Polymorph on. It lists 16 of them, 1.15.2 to 1.21.1. Forge, Fabric and NeoForge each work for Polymorph, one at a time. A profile on another version never starts Polymorph.
  2. 2Nothing has to go in before Polymorph. No library is listed under Polymorph. The Polymorph page names its own requirements. A fresh profile is enough for Polymorph.
  3. 3Drop polymorph-neoforge-1.1.0_1.21.1.jar into the mods folder. 0.2 MB is the whole Polymorph file. The server needs that same Polymorph file. The folder may hold other mods beside Polymorph.
  4. 4Start the game and look for Polymorph in the mods list. It loads on its own once the version matches. No Polymorph entry means the loader or the version is off. 1,502 watchers follow Polymorph today.

Polymorph runs on 16 game versions, 1.15.2 to 1.21.1. 26.2 is 14 releases past Polymorph. Each Polymorph jar is built per version. 1.15.2 is as far back as Polymorph goes.

See our full mod install guide

Compatibility & alternatives

Forge, Fabric and NeoForge run Polymorph today. It includes click to choose desired output. It stops at 1.21.1. 16 versions carry Polymorph. It belongs on both sides.

jei sit well next to Polymorph. It counts 5 features across 16 versions. No shared library ties Polymorph down. Controlling (for a different conflict, keybinds) cover ground Polymorph also covers. Just Enough Items and JourneyMap share the shelf with Polymorph.

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Frequently asked questions

  1. Polymorph logo beside a crafting table

    What does Polymorph actually do?

    Solves recipe conflicts in modpacks by letting players choose which result to craft when multiple recipes share the same inputs. Polymorph brings recipe conflict resolution. It names 5 features, Recipe conflict resolution first. TheIllusiveC4 files Polymorph under Utility.

  2. Polymorph logo beside a anvil

    What does Polymorph need to run?

    Polymorph builds exist for Forge, Fabric and NeoForge. It includes click to choose desired output. 3 loaders run Polymorph. It takes one loader only.

  3. Polymorph logo beside a clock

    Which releases does Polymorph cover?

    Polymorph covers 16 releases, 1.15.2 to 1.21.1. It lists works with crafting table, furnace, and more among its features. It reaches 1.21.1. 1.15.2 is the oldest Polymorph names.

  4. Polymorph logo beside a compass

    Has Polymorph reached 26.2?

    Not yet: Polymorph halts at 1.21.1. Pin 1.21.1 to keep Polymorph. 1.21.1 still runs Polymorph. 26.2 has no Polymorph build.

  5. Polymorph logo beside a chain

    What does Polymorph depend on?

    No, Polymorph stands alone. It includes supports all modded recipe types. It lists persistent output preference among its features. It counts 5 features across 16 versions.

  6. Polymorph logo beside a beacon

    Is Polymorph fine in multiplayer?

    Yes, both sides need Polymorph. The server needs Polymorph, players too. One wrong Polymorph version breaks the join.

  7. Polymorph logo beside a writable book

    What may I do with Polymorph?

    TheIllusiveC4 publishes Polymorph under LGPL. It brings click to choose desired output. Recording Polymorph is your own business. The Polymorph code reads openly.

  8. Polymorph logo beside a emerald

    Polymorph: still worth installing?

    1,502 people follow Polymorph for new builds. It includes works with crafting table, furnace, and more. It lists click to choose desired output among its features. It last landed on 1.21.1.

  9. Polymorph logo beside a bookshelf

    What sits beside Polymorph?

    Polymorph shares its Utility shelf with Just Enough Items, JourneyMap and Jade. It lists persistent output preference among its features. It brings works with crafting table, furnace, and more. 22 Utility mods stand beside Polymorph.